Lightning Warrior

After Dilan told Kathrine that Old Jeff was ready to start forging and that he was only waiting for the first batch of forging ingredients, she hurriedly completed all the preparations to start mining.

Because they didn't possess any mining tools, they had to use their weapons that were either coated with mana, or strengthened by their abilities.

Dilan helped in a rather simple manner and used [Mana Slash] with the least Units of Mana to cut through the large ore deposits that he could clearly see jutting out of the ground.

Collecting Lumina crystals, Jadetite, and Silver Iron ore was the most important step to start with as Sarah would be able to finally begin concocting the mana replenishment potion while Old Jeff could start testing how the forging process of mana-enriched materials would differ from the usual process.